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Finding the Fourth Proportional to 32,520.90, 48,780.20 and 13,788.88

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Solution

The fourth proportional to 32,520.90, 48,780.20 and 13,788.88 is: 20,682.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,520.90 : 48,780.20 = 13,788.88 : x
  2. Step 2: Convert to fraction form
    32,520.90/48,780.20 = 13,788.88/x
  3. Step 3: Cross multiply
    32,520.90x = 48,780.20 × 13,788.88
  4. Step 4: Simplify right side
    32,520.90x = 672,624,324.18
  5. Step 5: Solve for x
    x = 672,624,324.18/32,520.90
  6. Step 6: Final answer
    x = 20,682.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.